Locomotive-boiler furnace.



C. B. MOORE.

LOCOMOTIVE BOILER FURNACE. APPLICATION FILED FEB. 14, x912.

Patented May 4, 1915.

HVSENTOH WITNESSES:

Qavilaa jiborg:

nvention is not limited to @FFXGE.

CHARLES B. MOORE, 0F EVANSTDN, ILLINOIS. ASSIGNOR, BY

TO AMERICAN ARCH COMPANY, OF NEVJ YORK, N. Y.. A

WARE.

ASSIGNMENTS, *CORPQRATION OF DELA- LOCOMOTIVE-BC ILEB FURNACE.

Specification of letters Patent.

Patented May 4. 1915.

Application filed February 14. 1912. Sari-lino. 677,568.

To all ic/tom it may concern.

Be it known that l, CnAnLns B. Moons, a citizen of the United Stu tes. and a resident of the city of Evanston, county of Cook, and State of Illinois, have invented certain new and useful Improvements in Locomotive- Boiler Furnaces, of which the following is a specification.

My invention relates to improvements in locomotive boiler fireboxes and has particula r reference to improvements in refractory bullies or deflecting walls commonly called arches for the fireboxes of locomotives.

The general objects of my invention are to provide an arch for locomotive boilers which can be easily and quickly built; which can be as easily and quickly dismembered or removed which shall be of comparatively light weight and low cost; and parts of which can be readily removed for the repair of the firebox.

A further object of my invention is to provide an arch of the above construction installation in locoparticularly adapted for with a plurality of motive boilers equipped water-circulating tubes.

- My nve iion consists in the several imroveinents, the various features of construction and the combinations of parts by means of which the above and other objects are attained and all as hereinafter described and pointed out in the appended claims.

My invention will be more readily undcrstood by reference to the accompanying drawings forming part of this specification. and in which:

Figure '1 is a central vertical longitudinal section of a locomotive firebox equipped with a refractory arch the whole embodying my invention; Fig. 2 is an enlarged. transverse sectional view on the line 2-2 of Fig. 1; Figs. 3, 4 and 5 are perspective views of sev" eral of the refractory saddles or supporting; members; and Fig. (5 is a fragmentary sectional view similar to Fig. 2 illustrating a modified form of saddle.

Refractory arches are made use of in locomotive boiler fireboxes for different specific results and iilthoug'h l have confined the illustration of my invention to a so-called front arch, it should be understood that my an arch occupying this particular position and having the spe cific functions of such arches. A. o called front arch usually occupies an inclined position the forward end of the firebox, arrange. P

l lxiwccn the fuel lied and the lines if functions are to bulllc and firebox ises and prevent said g'a cs from the fuel bed to the lines, th reby cad-sing them Y0 ilow lnv'lwvaril and ii irll in the firebos: and distribute their lltnli over substantially the entire interior surf ol' the firebox and particularly tlll()ll the length of the crown sheet. Arches mode in accordance with my invention not. only retain the above desirable features but also assist in the con]- mingling); and admixing of the firebox and thereby prevent the stratification thereof.

A locomotive firebox as shown. in the drawings consists of a line sheet 2 at its forward end. side sheets 3. 3, a. rear sheet t having a fuel door or opening and (t crown sheet ll. The firebox is provided with a to 7. Flues 8 lead forward from the flue sheet. The firebox illustrated is provided with a number of W8tEF-ClPCl1lz1IlBg tubes 9, the same being inclined upwardly and rea.r- Wardly from the low portion of the flue sheet to the upper portion of the rear sheet and serving to increase the circulation of water between ll 7-. front and rear water less of the boiler, as well as aiding in the rapid production of steam. I make use of these the 'ases between zlie fuel bed and the arch.

Furthermore. the mitcrrirculating tubes or-- dinarily used in locomotive boilers have usually relatively thin alls and as they extend from. the line sheet to the rear sheet of the firebox, they can be coni 'iaratirely easily sprung out of their proper positions and as the refractory arch which is sui iporteil l" these tubes is relatively heavy. the tubcs must be protect-( d from being: distorted by the welsht of the ii. in illv' nov l l riu oi arch Ol',l.-l,l'l2

fractory arch saddles or supports, which I place upon the tubes and I use these saddles as the supports for the bricks of which the arch itself is composed and these bricks lie in a plane above the plane of the tubes and are wedged between the side sheets of the firebox. They are supported in their raised position by the refractory (idles which rest upon the upper surfaces of the tubes and consequently the strains necessary to hold bricks of the arch transversely in the firebox, are not transmitted to the tubes thenv selves andtherc'fore the tubes are not forced out of their normal positions but are free to assume positions in which they are not subject to distorting strains due to the werig leg action of the arch.

The firebox illustrated is provided with four of the arch supporting tubes and provide refractory saddle bricks 14) for placement upon the tubes. These saddle bricks are relatively narro and have a tube receiving groove 11 formed in their under sides. They also a semi-cylindrical projecticui l2 upon t eir upper sides arranged parallel with ti; groove 11 and pro erably of about the same radius. These saddle bricks are also provided with laterally extending flanges 13 providing marginal one on each side upon Wl) l shoulders lo arch bri sll are adapted to rest. The arch bricks th selves are provided "with. 1-1" at their ends which substantially iii the projections 12 of the saddle bricks and the transverse ends 15 of the arch bri above the saddle bricks are inclined. invrrlly so that when the bricks are in position shown in Fig. 2, a V-shaped crack or open-- ing 15 provided between the Ql'lur: l The saddle bricks are pro video in their uppci sides with V-sha; ii splitting or cracking grooves n; which practically form extensions of the f-shaped grooves 15 between the transverse ends of the arch bricks when said bricks are in place. The saddle bricks as illustrated may be tapered from end. to end so that when placed in position they will support one edge of the arch bricks higher than the other edge and 1 commonly make use of supporting bricks of difl'orent thicknesses or heights arranged end to end as illustrated so arranged that they form substantially cm'i'tinuous refractory arch saddles or supports With their upper or brick receiving surfaces inclined at a. different angle from the angle of the tubes upon. which the arch rests. This construction lends itself readily to the production of an arch having its for ward end raised farther away from the tubes than itsrear end as shown n Fig. A f her advantegc that the arch it can iii: of arch bricks which can (.236 he used for building arches directly r a" the tubes themselves wit-hoot the interred rical projrctions'or abutnients 12 m lie bric s. The individual bricks of the at niterl in size by the features that shall not be too hnlky or heavy to L; iv placed in positioii; that they I" .ble of being readily passed through the tire loor and also that they shall be as large C(FIZSlSlZBIlb with these "tatiwie o the end that the arch itself ml be compo of as few individual i-nibers as po is. The arch bricks lilprovided v i relatively large gas mixing pr ts or pits ill in their under sures which reduce their weight Without 1nai: reducing their strength conse qnientlgg the arch as a whole is comparativclv light, The gas mixing pockets ll serve the purpose of providing the uiuler of the arch with a plurality of mixing recesses and deflecting walls *hich enhance the intcrniingli'fiq of the gases ot combustion and in prod doing per- I;

sense, floats upon the tube and is free to adjust itself in accordancewith the positions of the arch brill and, iv any lateral or transverse tubes.

In building niches in rcrdance with n'iv invention, aft 1' the sadd ic s have beeii placed, in I the tubes I arrange averse rows reaching" slieet, the first row in substauitial abutment with fl 7 The rows comprise middle mein'oe s which rcst'at each end upon saddles and marginal members 3 8'vvhich rest at their inner ends upon -eHlbE-l and at their outer ends are supper-11ml by one of the side sheets. 'i l ess marginal bricks 13 are arranged in outsvar dly-i-nclined positi -s sing the side sheets iportupon which t serve to lock tho ersely in the l to lit either the tubes or the sheet.

bricks 1% do not I side f length (le irod by ucli J verso 1'0 '5 of the arch brie row and an Ol'tQll thereh be made of any suitable: but two lrulv verse! rows e the ii 1' ultu.

l'orzni-rl unel having ILAC' time, the art-l1 brie fractal-y supp ,ing; brir V less tl'ioroug'hly cei'neuli-il after Wlll (lifi of the ll'fi'li for the purpo bricks of the arch Mn lrv remain o apart by driving WC! Q into the \r 'i-iliil grooves if. if they are llllll'fl'l fil to the refruetory arch por' (an I complete the :HCll

ling zirlrliiji nul lzs abov til-survives broken upurt upon the l'rm'lnp (ill line provialed by ihobreuliing or cracking ooi'r-s iii.

As many nioilillenl'ions of my invention will readily suggest then selves to one bkilleil in the art, I do not limit or confine my inrention lo the specific structures herein shown and described I claim:

1. In. :1 locomotive boiler firebox lowing a. plurality of substantially parallel water-ciroulnitin tubes, a refractory arch ("UfilPOSCd. of a plurality of refractory slab-like arch bricks arranged. across the firebox the end br cks oi ouoh row being Wedgingly eng med with :i side sh it of the box, re: 'ractory up porting members formed. for placement upon the tubes; :llli'l serving to support Saul br ubm'e the plane of the tubes st iort on members liufig semi-eylindri etions on theii llfzlCQ i plural; oi i ll. l li!lil rallel fil t-GT-Qll ouluting r in comb. i t ,1; u refructori' supported tubes and extending om biile sheet to e sheet said arch coin pri .1 n plurul'ir q 1 rows (jil or zudinully :irran 'nl upon Salli tubes and re nrtory arch bin 1. is arranged in irunsverse exleniling from siile sheet to si le sheet, Quid :irrh h, i V baring zlieir udjnm it ei 15 +1 i neal to form longitiulinal groo'vei in arch and quid ippoi'ting brirl liming "wares n their upper sur'fuces zrinuiuions of said longitiuliiuil n e; nu l ihereby providing the well with ll itl breaking liner.

l fl lill. motive boiler firebox having a ll): .uulizilly parallel urrl'i supin e ibiuntion with a rofrac lhuriiin e: mulling; from side sheet and wcilgingly interposed lit-rebetween, nahl urrh comprising u pluriil it of supporting; members arranged upon will tubes and 2! pl= rulity of transverse rows of arr-h lull-la;- spnnniug from supporting member to xupporling member and resting ill. their ends therein), said supporting members being provided with grooves in their upper Uilgtn' forming fracturing lines in said arch ilisp l above said tubes.

A locomolire boiler firebox containing a plurality of inclined substantially parallel nter-vireulutiug tubex. in eoinl'iinlilion with a refrzwtory front arch therein extending from side sheet lo side sheet and resting a m-an st the line sheet engl comprising plurulily oi' iel'ruciory arch supports arranged upon said tubes and u refractory arch proper resting upon said supports and there helcl above the plane of the tubes,

supports beneath the forward end .he will of the arch proper being higher than those beneath the real r ou of the urrh proper.

l A locomotive boiler firebox containing :2, plurulity of llli'fllllO-Ll substantially parallel u: in eirculuting tubes lying in substaniiiilly a. single bl'ktl receiving socket or groove in its lower face and a longitudinal brick receiving projection on its upper face, said projection being prorided with a V-shaped crack or slot in its upper part.

8. A. refractory supporting member for locomotive arches comprising an elongated refractory brick having a longitudinally arra Ilg'lfld tube receiving socket or groove in its lower face, laterally extending supporting ilunges on its eiilges and a longitudinal semicylindrical projection on its upper side, said projection baring a V-shaped cracking slot in its upper surface.

A locomotive boiler firebox, crin taining a plurality of longitudinally,arranged water circulating tubes lying in a transverse plane, in combination with a refractory arch proper arranged above said tubes and ex tending from side to side of the firebox, the arch proper being longitudinally inclined. relatively to the tubes, and narrow, elongated refractory arch supports having tube receiving grooves in their lower sides and resting upon said tubes anti maintaining the arch proper in its relatively inclined po sition.

In testimony whereof, 1 have hereunto et my hand, this 24th day of January 1912, u the presence of two subscribing Witnesses.

CHARLES B. MOORE.

Vitnesses.

JOHN R. Luna-111e, M, SIMON. 

